The Chilean is due to be unveiled as a Red imminently after undergoing his medical on Sunday afternoon at Carrington, reports the MEN.

However his arrival at Old Trafford will spell the end for one United player with Henrikh Mkhitaryan set to become an Arsenal player as he moves down to the Emirates.

Speaking after Arsenal's win against Crystal Palace on Saturday, Arsene Wenger said on Sanchez: "I didn't take him because there is question of him moving to Manchester United and you cannot drive up north and as well play football. That's difficult so that's why I decided to leave him out.

"I expect it to happen maybe but I cannot announce it because in the next 48 hours it will be decided one way or the other."

Stick with us as we bring you all the transfer news LIVE from Old Trafford.

Arsenal fans react to Thierry Henry's chat with Sanchez

Sanchez speaks on Instagram

Sanchez on the no.7 shirt

“When they told me that Cristiano, Cantona, David Beckham had all worn it, just thinking about that number seven sets you off dreaming in your head with ideas about lifting the Champions League trophy and winning the Premier League title. So yes, I’m fulfilling a dream and I hope to give my very best and win many trophies at this club.”

19:48

Sanchez on his strengths

Sanchez says on MUTV:

“I’m a player who likes to win everything. I’m very professional in everything I do. I live for football. I love football. It’s what I’m passionate about. I train hard every day and after a game I try to look at what went well and where I can improve. I really like to play down the left, through the middle… but to tell you the truth, as long as I’m playing football, I’ll fit in anywhere!”

19:40

Sanchez on Mourinho

On Mourinho, Sanchez says:

“He indicated it is important for the club for me to be here. I also believe that the club itself cared about me joining, and I got the impression that they were keen for me to come here and wear the number seven shirt. I think that also gets through to the player. Players sometimes need to feel important and loved by the club. That was one of the things that attracted me to come here, along with the manager, who is a person who won everything in Italy, the same as he did in Spain, and he’s a manager who likes to win.”

Sanchez message to the fans

Sanchez on United

“I looked at the badge and my hairs just stood up on end because it’s a powerful club and the biggest in England”.

19:33

Sanchez first interview

He tells MUTV:

‘Since I was a boy I’ve always said my dream was to play for Manchester United. I’m not saying that because I’m here now... I always said as a kid that I’d like to play for United, and I once spoke to Sir Alex Ferguson about it.

‘We chatted for around twenty minutes. And I told him that it was my dream to come here to United.’

19:28

Lingard welcomes Sanchez

Brilliant.

19:16

Herrera says goodbye to Mkhitaryan

Nice touch.

18:58

Fans unconvinced by Mkhitaryan

Mkhitaryan says it is dream to play for Arsenal. People are unconvinced...

18:52

Young welcomes Sanchez

The first current player to tweet.

18:51

Sanchez signing his contract

Official, and everything.

18:46

Lingard likes Sanchez deal

He’s made his feelings clear.

18:32

Ferdinand welcomes Sanchez

Rio is still United at heart.

18:31

City's coincidental timing

United fans loving it.

18:23

Biggest coup since Cantona?

Big claims, this! A straight swap is an excellent deal though.

18:14

Sanchez on Instagram

A pointed message for some of the former Arsenal players who have called him a mercenary, here.

Sanchez in United Red

Suits him.

18:06

Mourinho on Alexis Sanchez

Mourinho said:

“Alexis is one of the best attacking players in the world and he will complete our very young and talented group of attacking players. He will bring his ambition, drive and personality, qualities that make a Manchester United player and a player that makes the team stronger and the supporters proud of their club dimension and prestige.

“I would like to wish Henrikh all the success and happiness that I am sure he is going to get. He is a player that we will not forget, especially for his contribution to our Europa League victory.”

18:04

Sanchez speaks about United transfer

He told ManUtd.com:

“I am thrilled to be joining the biggest club in the world. I have spent three-and-a-half wonderful years at Arsenal and I bring with me very positive memories of that great club and its fans. The chance to play in this historic stadium and to work with Jose Mourinho was something I could not turn down. I am very proud to be the first Chilean player ever to play for United’s first team and I hope I can show our fans all around the world why the club wanted to bring me here.”

18:03

Arsenal announce Mkhitaryan

At the same time - Arsenal announce Mkhitaryan has joined them.

18:01KEY EVENT

Unitd announce Sanchez

FINALLY!

17:56

Sanchez on Merseyside, Blind in Paris

Meanwhile, here’s a photo of Daley Blind with Mickey Mouse and Donald Duck.